Table 5. Accuracy of the BADRI risk model as applied to the European dataset using various cut-off values (risk scores).

RiskScore	Patientswith ADR	Patientswithout ADR	Sensitivity	Specificity	Youden’sindex (J)	1-specificity
>0	53	342	0.95	0.20	0.15	0.80
>1	45	232	0.80	0.46	0.26	0.54
>2	26	108	0.46	0.75	0.21	0.25
>3	10	22	0.18	0.95	0.13	0.05
>4	1	3	0.02	0.99	0.01	0.01

Note Youden’s Index is largest when the cut-off value is >1 (with sensitivity of 80% and specificity of 46%).